Home / 712,959.90-1,069,439.85-665,720.70

Finding the Fourth Proportional to 712,959.90, 1,069,439.85 and 665,720.70

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Solution

The fourth proportional to 712,959.90, 1,069,439.85 and 665,720.70 is: 998,581.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,959.90 : 1,069,439.85 = 665,720.70 : x
  2. Step 2: Convert to fraction form
    712,959.90/1,069,439.85 = 665,720.70/x
  3. Step 3: Cross multiply
    712,959.90x = 1,069,439.85 × 665,720.70
  4. Step 4: Simplify right side
    712,959.90x = 711,948,245,549.90
  5. Step 5: Solve for x
    x = 711,948,245,549.90/712,959.90
  6. Step 6: Final answer
    x = 998,581.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.